#include<bits/stdc++.h>
#define ll long long
#define ull unsigned long long
using namespace std;

const int N = 1e6 + 10, INF = 0x3f3f3f3f;

int n;
priority_queue<int, vector<int>, greater<int>> q;

void solve()
{
    cin >> n;
    int op, x;
    while (n--) {
        cin >> op;
        if (op == 1) {
            cin >> x;
            q.push(x);
        } else {
            x = q.top();q.pop();
            cout << x << '\n';
        }
    }
}

signed main()
{
    //ios::sync_with_stdio(0);
    //cin.tie(0);cout.tie(0);
#define ONLINE_JUDGE
#ifndef ONLINE_JUDGE
    std::istringstream in(R"()");
    std::cin.rdbuf(in.rdbuf());
#endif
    int T = 1;
    //cin>>T;
    for (int i = 1;i <= T;i++) {
        solve();
    }
}